diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index cec19a2..e722eaa 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -404,7 +404,7 @@ module ApplicationHelper
       }
       Effect.toggle( div, "slide", { link:link, div:div, afterFinish:end } )
     }')
-    environment.top_level_categories.each do |toplevel|
+    environment.top_level_categories.select{|i| !i.children.empty?}.each do |toplevel|
       next unless object.accept_category?(toplevel)
       # FIXME
       ([toplevel] + toplevel.children_for_menu).each do |cat|
diff --git a/test/unit/application_helper_test.rb b/test/unit/application_helper_test.rb
index 325a89e..458292d 100644
--- a/test/unit/application_helper_test.rb
+++ b/test/unit/application_helper_test.rb
@@ -120,10 +120,40 @@ class ApplicationHelperTest < Test::Unit::TestCase
     assert_equal 'Profile Member', rolename_for(person, community)
   end
 
+  should 'display categories' do
+    category = Category.create!(:name => 'parent category for testing', :environment_id => Environment.default)
+    child = Category.create!(:name => 'child category for testing',   :environment => Environment.default, :display_in_menu => true, :parent => category)
+    owner = create_user('testuser').person
+    @article = owner.articles.create!(:name => 'ytest')
+    @article.add_category(category)
+    expects(:environment).returns(Environment.default)
+    result = select_categories(:article)
+    assert_match /parent category/, result
+  end
+
+  should 'not display categories if has no child' do
+    category = Category.create!(:name => 'parent category for testing', :environment_id => Environment.default)
+    owner = create_user('testuser').person
+    @article = owner.articles.create!(:name => 'ytest')
+    @article.add_category(category)
+    expects(:environment).returns(Environment.default)
+    result = select_categories(:article)
+    assert_no_match /parent category/, result
+  end
+
   protected
 
-  def content_tag(tag, content, options)
+  def content_tag(tag, content, options = {})
     content.strip
   end
+  def javascript_tag(any)
+    ''
+  end
+  def link_to(label, action, options = {})
+    label
+  end
+  def check_box_tag(name, value = 1, checked = false, options = {})
+    name
+  end
 
 end
--
libgit2 0.21.2